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Gearing Guide & Calculator
A easy to use yet advance Karting Gearing Guide & Calculator. Shows speed & ratio, Gives a good basline for gearing setup and is up to date & Current.
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KartingForum.co.uk Gearing Calculator - BETA
Engine Speed (RPM)
4500
4750
5000
5250
5500
5750
6000
6250
6500
6750
7000
7250
7500
7750
8000
8250
8500
8750
9000
9250
9500
9750
10000
10250
10500
10750
11000
11250
11500
11750
12000
12250
12500
12750
13000
13250
13500
13750
14000
14250
14500
14750
15000
15250
15500
15750
16000
16250
16500
16750
17000
17250
17500
17750
18000
Front Sprocket Teeth
MPH
9
10
11
12
13
14
15
16
17
18
19
20
Rear Sprocket Teeth
KPH
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
Rear Tyre Circumference (cm)
Gear Ratio
75
76
77
78
79
80
81
82
83
84
84.5 (11" Rear Tyre)
85
86
87
88
89
90
91
92
93
94
95
Notes: 1) 219 pitch chains: Front sprocket teeth (12) + rear sprocket teeth (89) + 10 = 111. Round it up = 112 Link Chain.
2) Rear Tyre sizes: 84.5cm circumference is the 11" standard UK rear tyre size for most if not all classes.
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